$\sqrt{\left(\frac{3+4x}{1-x}\right)}$
$2\left(-3-2m\right)\left[-5+8m\right]-7$
$\int_1^{\infty}\left(\frac{5x-2}{3x+1}\right)dx$
$\binom{\:n}{k}\cdot\:\binom{\:k}{r}$
$\frac{\left(\cot\left(x\right)-\tan\left(x\right)\right)}{\cot\:\left(x\right)+\tan\:\left(x\right)}$
$2+3y-5y$
$1x+x-6x^2$
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